Hach pH Manuel D'utilisation page 6

Figure 1 Sensor styles
1 Insertion—for installation in a flow cell or pipe
adapter of a ball valve hardware assembly. Allows
removal without stopping the process flow.
2 Convertible—for a pipe tee or immersion in an
open vessel
Insertion sensors—Insertion sensors are similar to convertible sensors, but the 1-inch NPT threads
are only on the cable end for mounting into a flow cell or the pipe adapter of a ball valve hardware
assembly. Insertion sensors are put into or removed from the process without having to stop the
process flow.
Convertible sensors—Convertible sensors have 1-inch NPT threads at both ends of the body for
mounting in the configurations that follow:
• into a standard 1-inch NPT pipe tee
• into a pipe adapter for union mounting and a standard 1-½ inch pipe tee
• onto the end of a pipe for immersion into a vessel
Note: Convertible sensors can also be used in existing installations for 1-½ inch LCP, Ryton and epoxy sensors.
Sanitary sensors—Sanitary sensors feature a built-in 2-inch flange for mounting into a 2-inch
sanitary tee. A special cap and EDPM compound gasket are included with sanitary sensors for use
with the sanitary hardware.
Stainless steel sensors—Stainless steel sensors have 1-inch NPT threads at both ends of the
body. Stainless steel sensors are for immersion in an open vessel.
Section 3 Installation
3.1 Mounting
Explosion hazard. Make sure that the mounting hardware for the sensor has a temperature and
pressure rating sufficient for the mounting location.
Personal injury hazard. Broken glass can cause cuts. Use tools and personal protective equipment to
remove broken glass.
6 English
3 Sanitary—for install in a 2-inch sanitary tee
4 Stainless steel—for immersion in an open vessel
W A R N I N G
C A U T I O N